MC34067DW

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: High-performance, adjustable output voltage, wide input voltage range
• Package: Dual-In-Line Package (DIP)
• Essence: Regulates and stabilizes voltage in electronic circuits
• Packaging/Quantity: Typically sold in reels or tubes containing multiple units

Specifications

• Input Voltage Range: 8V to 35V
• Output Voltage Range: 1.25V to 33V
• Output Current: Up to 500mA
• Operating Temperature Range: -40°C to +85°C
• Package Type: SOIC-16

Detailed Pin Configuration

The MC34067DW has a total of 16 pins. Here is the detailed pin configuration:

1. VCC: Positive supply voltage input
2. GND: Ground reference
3. COMP: Compensation pin for regulating output voltage
4. FB: Feedback pin for setting desired output voltage
5. RT/CT: Timing resistor/capacitor connection for frequency control
6. CT: Timing capacitor connection for frequency control
7. RT: Timing resistor connection for frequency control
8. OSC: Oscillator timing capacitor connection
9. OSC: Oscillator timing resistor connection
10. SYNC: Synchronization input for external clock
11. INV: Inverting input for error amplifier
12. NONINV: Non-inverting input for error amplifier
13. OUT: Output voltage
14. NC: No Connection
15. NC: No Connection
16. VREF: Reference voltage output

Functional Features

• Adjustable output voltage through feedback pin (FB)
• Overcurrent protection
• Thermal shutdown protection
• Wide input voltage range allows for versatile applications
• Low dropout voltage

Advantages and Disadvantages

Advantages: - High-performance voltage regulation - Wide input voltage range allows for flexibility in various applications - Overcurrent and thermal protection ensure safety and reliability - Adjustable output voltage provides customization options

Disadvantages: - Limited output current capacity (up to 500mA) - Requires additional external components for proper operation

Working Principles

The MC34067DW is a voltage regulator IC that operates based on the principle of feedback control. It compares the actual output voltage with the desired voltage set by the user through the feedback pin (FB). The error amplifier amplifies the difference between these voltages, which is then used to adjust the duty cycle of the internal oscillator. This adjustment controls the switching frequency of the power transistor, regulating the output voltage.

Detailed Application Field Plans

The MC34067DW finds applications in various fields, including:

1. Power supply units for electronic devices
2. Battery charging circuits
3. Automotive electronics
4. Industrial control systems
5. LED lighting systems
6. Telecommunications equipment

Detailed and Complete Alternative Models

Some alternative models to the MC34067DW include:

1. LM317: Adjustable Voltage Regulator
2. LM7805: Fixed Voltage Regulator (5V)
3. LT1083: Adjustable Linear Regulator
4. LM2596: Switching Voltage Regulator
5. LM1117: Low Dropout Regulator

These alternative models offer similar functionality and can be considered as substitutes depending on specific requirements.

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